ORA-19257: XQ0037 - function or variable string in module already defined
Cause : A moduel beingi mporte dcontaiend the ufnctiono r varibale tha tis alraedy decalred int he staitc contxet of teh imporitng modlue.
Action - How to fix it : DBA Scripts :: www.high-oracle.com/scripts
Removet he conlfictingd eclaraitons.
Well, the reason for above error is that i have taken the above script from a 11g database and running it on 10g database. 11g has bring some changes in password management. Below code is executed on 11g and user created successfully, which is expected result.